1.Rubber air spring be made of NBR,NR,EPDM... 2.Quality ... 3.OEM is welcome 4.Price:negotiable 1.Rubber air spring is applied in Automotive, medical device, electronics, toy,etc ... , electronic and electric appliances, hardware and machinery, hydraumatic and pneumatic products, as well as vehicle and motorcycle fittings and medical ... Requirement2.Designs and Specification are Accepted rubber air spring